In addition, the ecospat package includes Niche Quantification and Overlap functions that were used in Broennimann et al. 2012 and Petitpierre et al. 2012 to quantify climatic niche shifts between the native and invaded ranges of invasive species.

MigClim

MigClim is an R package which allows simulating plant dispersal under climate change and landscape fragmentation scenarios. MigClim allows implementing various parameters, such as dispersal distance, increase in reproductive potential over time, landscape fragmentation or long-distance dispersal.

Niche overlap

The R package 'ecospat' R now includes the functions to perform measures of niche overlap and niche equivalency/similarity tests.

Short tutorial:

Create a folder with a R shortcut. Use this folder as workspace by setting the path in the proprieties of the shortcut (right click). In this folder also put your datasets of occurences data (delimited text file with column names x,y) and datesets of points representing the study areas with environmental values (column names should be x,y,X1,X2,...,Xn).

The user scripts allow setting the analyses for the calculations with an example data. Use user_script_2sp_2A.R if you want to compare niches of 2 species in different areas (e.g. invasive species). Use user_script_Nsp_1A.R if you want to compare niches of n species in the same area.